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><SPAN
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>GR_WINDOW_ID</SPAN
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><H2
>Name</H2
><SPAN
CLASS="TYPE"
>GR_WINDOW_ID</SPAN
>&nbsp;--&nbsp;Window ID</DIV
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>Synopsis</H2
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>typedef GR_ID  GR_WINDOW_ID;
  </PRE
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><H2
>Description</H2
><P
>    The <SPAN
CLASS="TYPE"
>GR_WINDOW_ID</SPAN
> type uniquely identifies a nano-X
    window or pixmap. The value <TT
CLASS="CONSTANT"
>0</TT
> is an illegal
    value for a window ID. 
    </P
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><H3
><TT
CLASS="CONSTANT"
>GR_ROOT_WINDOW_ID</TT
></H3
><P
>    Nano-X defines a constant window ID
    <TT
CLASS="CONSTANT"
>GR_ROOT_WINDOW_ID</TT
> which is always valid. This
    window ID indicates the <I
CLASS="EMPHASIS"
>ROOT</I
> window of the
    nano-X server. The <I
CLASS="EMPHASIS"
>ROOT</I
> window is the eldest
    ancestor of all other windows.
    </P
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><H2
>See Also</H2
><P
>      <A
HREF="nxstruct_GR_ID.html"
>            <SPAN
CLASS="STRUCTNAME"
>GR_ID</SPAN
></A
>, 
      <A
HREF="nxapi_GrNewWindow.html"
>            <TT
CLASS="FUNCTION"
>GrNewWindow()</TT
></A
>, 
      <A
HREF="nxapi_GrNewWindowEx.html"
>            <TT
CLASS="FUNCTION"
>GrNewWindowEx()</TT
></A
>, 
      <A
HREF="nxapi_GrNewPixmap.html"
>            <TT
CLASS="FUNCTION"
>GrNewPixmap()</TT
></A
>, 
      <A
HREF="nxapi_GrNewInputWindow.html"
>            <TT
CLASS="FUNCTION"
>GrNewInputWindow()</TT
></A
>, 
      <A
HREF="nxapi_GrNewPixmapFromData.html"
>            <TT
CLASS="FUNCTION"
>GrNewPixmapFromData()</TT
></A
>.
    </P
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